Seed purifying device for extremely small seeds

The utility model discloses a seed purifying device for extremely small seeds. Box body, a plurality of first sieve holes are formed in a first sieve plate detachably arranged at the upper end of thebox body; two angle-adjustable vibrating screen plates are symmetrically arranged in the box body; a plurality of second flat vibrating motors are arranged on the lower surface of the inner end of thevibrating screen plate; two second sieve plates inclining downwards from outside to inside are symmetrically mounted in the box body at the lower end of the vibrating sieve plate; a plurality of second sieve holes are formed in the middle of the second sieve plate; compared with the prior art, the seed screening device has the beneficial effects that seeds and impurities can be primarily screenedafter passing through the first screen plate, the screened impurities and seeds roll onto the vibrating screen plate and then drive the vibrating screen plate to vibrate through the work of the second flat vibrating motor, and